spring application.xml在项目中的几种解析方式(正在整理中......)

解析 在java项目中的spring applicationContext.xml文件的几种解析方式：
一种：
ApplicationContext cxt = new ClassPathXmlApplicationContext(“applicationContext.xml”);
cxt.getBean(“在applicationContext.xml中bean的id”);

二种：
ApplicationContext cxt =
 new FileSystemXmlApplicationContext(“applicationContext.xml的绝对路径”);
cxt.getBean(“在applicationContext.xml中bean的id”);

三种：
Resource res= new ClasspathResource(“applicationContext.xml”);
XmlBeanFactory factory = new XmlBeanFactory(res);
factory.getBean(“applicationContext.xml中的bean的id”); 

第四种:在web项目中解析applicationContext.xml，此方法本人感觉很好用，如在struts2.0+hibernate3.0+sprnig2.0中，某jsp页面须用daoImpl(业务实现类的一个方法),一般写法是在action中调用该方法，写不可以直接使用，因为所有东东都交给spring管理了，但是在原来的基础上加上以下这个类，做法就多了，我们可以在该jsp页面用<s:bean id="aa" name="org.xxxx.Gean"> <s:set name="bb" value="%{#aa.getBean('此处为applicationContext.xml中所写的daoImpl的bean的id')}"> bb就是我们所要的方法的返回值.
public class GetBean {
    private XmlBeanFactory factory;
 public GetBean()
 {
    Resource res=new ServletContextResource(ServletActionContext.getServletContext(),"/WEB-INF/transaction.xml");
    factory=new XmlBeanFactory(res);
 }
    public Object getBean(String beanname)
    {
     XmlWebApplicationContext ctx=new XmlWebApplicationContext();
     ServletContext servletcontext=ServletActionContext.getServletContext();
     ctx.setServletContext(servletcontext);
     ctx.setConfigLocations(new String[]{"/WEB-INF/transaction.xml"});
  ctx.refresh();//由servletContext初始化beanfactory需要的配置文件，进而加载该配置文件
  Object obj=ctx.getBean(beanname);
      return obj; 
    }
}

 以下为applicationContext.xml完整配置文件，供参考

- < bean id =" config " class =" org.springframework.beans.factory.config.PropertyPlaceholderConfigurer ">

- < property name =" location ">

  < value > classpath:jdbc.properties </ value >

  </ property >

  </ bean >

- < bean id =" jdbc " class =" org.springframework.jdbc.datasource.DriverManagerDataSource ">

- < property name =" url ">

  < value > ${connection.url} </ value >

  </ property >

  < property name =" driverClassName " value =" ${connection.driver_class} " />

- < property name =" username ">

  < value > ${connection.username} </ value >

  </ property >

- < property name =" password ">

  < value > ${connection.password} </ value >

  </ property >

  </ bean >

- < bean id =" sessionfactroy " class =" org.springframework.orm.hibernate3.LocalSessionFactoryBean ">

  < property name =" dataSource " ref =" jdbc " />

- < property name =" hibernateProperties ">

- < props >

  < prop key =" hibernate.dialect "> ${dialect} </ prop >

  < prop key =" hibernate.show_sql "> ${hibernate.show_sql} </ prop >

  < prop key =" hibernate.generate_statistics "> true </ prop >

  < prop key =" hibernate.cache.use_query_cache "> true </ prop >

  < prop key =" hibernate.cache.provider_class "> org.hibernate.cache.EhCacheProvider </ prop >

  </ props >

  </ property >

- < property name =" mappingDirectoryLocations ">

  < value > /WEB-INF/classes/org/itfuture/wuliu/hbm </ value >

  </ property >

- < property name =" eventListeners ">

- < map >

- < entry key =" merge ">

  < bean class =" org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener " />

  </ entry >

  </ map >

  </ property >

  </ bean >

- < bean id =" transactionManager " class =" org.springframework.orm.hibernate3.HibernateTransactionManager ">

  < property name =" sessionFactory " ref =" sessionfactroy " />

  </ bean >

- <!-- DAO对象注入   -->

- < bean id =" cgdddaoimpl " class =" org.itfuture.wuliu.daoimpl.CgddDaoimpl ">

  < property name =" sessionFactory " ref =" sessionfactroy " />

  </ bean >

- < bean id =" cgshddaoimpl " class =" org.itfuture.wuliu.daoimpl.CgshdDaoimpl ">

  < property name =" sessionFactory " ref =" sessionfactroy " />

  </ bean >

- < bean id =" gysdaoimpl " class =" org.itfuture.wuliu.daoimpl.GysDaoImpl ">

  < property name =" sessionFactory " ref =" sessionfactroy " />

  </ bean >

- <!-- 业务层对象注入   -->

- < bean id =" cgddservice " class =" org.itfuture.wuliu.serviceimpl.CgddServiceImpl ">

  < property name =" cgdddao " ref =" cgdddaoimpl " />

  </ bean >

- < bean id =" cgshdservice " class =" org.itfuture.wuliu.serviceimpl.CgshdServiceImpl ">

  < property name =" cgshddao " ref =" cgshddaoimpl " />

  </ bean >

- < bean id =" gysservice " class =" org.itfuture.wuliu.serviceimpl.GysServiceImpl " scope =" prototype ">

  < property name =" gysdao " ref =" gysdaoimpl " />

  </ bean >

- < aop:config >

  < aop:advisor pointcut =" execution(* *..CgddDao.*(..)) " advice-ref =" txAdvice " />

  </ aop:config >

- < tx:advice id =" txAdvice ">

- < tx:attributes >

  < tx:method name =" save* " />

  < tx:method name =" update* " />

  < tx:method name =" delete* " />

  < tx:method name =" * " read-only =" true " />

  </ tx:attributes >

  </ tx:advice >

- <!-- Action -->

  < bean id =" baseaction " class =" org.itfuture.wuliu.action.BaseAction " />

- < bean id =" cgddAction " class =" org.itfuture.wuliu.action.CgddAction ">

  < property name =" cgddservice " ref =" cgddservice " />

  </ bean >

- < bean id =" cgshdAction " class =" org.itfuture.wuliu.action.CgshdAction ">

  < property name =" cgshdservice " ref =" cgshdservice " />

  </ bean >

- < bean id =" gysAction " class =" org.itfuture.wuliu.action.GysAction ">

  < property name =" gysservice " ref =" gysservice " />

  </ bean >

  </ beans >